Let’s Get Primitive!

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Let’s Get Primitive! Mr. Bunn Lunch Lectures Spring 2014

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Let’s Get Primitive!. Mr. Bunn Lunch Lectures Spring 2014. Thalassocnus. Thalassocnus. Extinct Semi-Aquatic (Marine) Sloth Fossils found off the coast of Peru and Chile What is familiar about this marine sloth’s fossil location? (Think back to our last lecture) 2-23 M.Y.A. Thalassocnus. - PowerPoint PPT Presentation

Transcript of Let’s Get Primitive!

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Let’s Get Primitive!Mr. BunnLunch LecturesSpring 2014

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Thalassocnus

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Thalassocnus•Extinct

•Semi-Aquatic (Marine) Sloth

•Fossils found off the coast of Peru and Chile▫What is familiar about this marine sloth’s

fossil location? (Think back to our last lecture)

•2-23 M.Y.A.

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Thalassocnus•Still mammals

•No gills => Lungs

•Original habitat:▫Coastal waters

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Thalassocnus

What is it eating?

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Thalassocnus•Diet▫Sea grasses

•Thalassia▫Extant genus of sea grass

•Why do you think this animal’s genus name is Thalassocnus?

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Thalassocnus•Why do you think these sloths fed on sea

grasses?

•Think about habitat (coastal waters)

•Think about diet (sea grasses)

•Sea grasses grow in shallow waters

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Deinotherium

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Deinotherium

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Deinotherium•Extinct

•Distribution▫Asia, Africa and Europe

•So…about those tusks?▫Claw?▫Shovel?▫Rake?

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Deinotherium

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Therizinosaurus•Therizo-▫“To reap” or “cut off”

•Extinct

•Fossils found in Mongolia

•Herbivorous?

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Therizinosaurus

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Epidexipteryx

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Epidexipteryx•Extinct

•“-teryx”▫“feather”

•Why do you think it has this name?▫“Display feather”

• Jurassic Period

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Epidexipteryx

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Epidexipteryx•Does it look like this animal would be able

to fly?

•Feathers evolved before flight

•Um, what?

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Epidexipteryx•Extinct

•“-teryx”▫“feather”

•Why do you think it has this name?▫“Display feather”

• Jurassic Period

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Helicoprion

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Helicoprion•Extinct

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Helicoprion

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Helicoprion•We’ve talked about genera…

•Lots of species in a genus

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Hallucigenia

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Hallucigenia•Cambrian period

•Didn’t last very long

•Why do you think this is?▫Protection from predation?▫Under-developed sensory or motor

function?

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Jaekelopterus

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Jaekelopterus

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Jaekelopterus•Enough said

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Longisquama

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Longisquama•Cambrian period

•Didn’t last very long

•Why do you think this is?▫Protection from predation?▫Under-developed sensory or motor

function?

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Longisquama•“Long scales”